Noncontact Ic Label and Method and Apparatus for Manufacturing the Same

Abstract

A non-contact IC label comprising an electrically insulating first substrate; an electrically connected antenna coil and IC chip provided on one surface of said substrate; a magnetic layer provided on said one surface of said substrate so as to cover said antenna coil and said IC chip, a first adhesive layer provided on said magnetic layer, an electrically insulating second substrate provided on said first adhesive layer, a second adhesive layer provided on said second substrate, a release paper provided on said second adhesive layer, and an overlay material provided on a third adhesive layer on the other surface of said first substrate.

Description

TECHNICAL FIELD [0001] The present invention relates to a non-contact data reception / transmission unit such as a non-contact IC label that can receive information from outside and send information to the outside through the medium of electromagnetic waves, such as information storage media of an RFID (Radio Frequency IDentification) application. [0002] The present invention relates to a semiconductor device and a manufacturing method therefor, and particularly relates to a semiconductor device in which a semiconductor substrate consisting of an IC chip mounted on a base substrate is sealed in resin and its manufacturing method. [0003] The present application claims priority on Japanese Patent Application No. 2004-299307, filed Oct. 13, 2004; Japanese Patent Application No. 2004-335100, filed Nov. 18, 2004; Japanese Patent Application No. 2004-335101, filed Nov. 18, 2004; Japanese Patent Application No. 2005-038963, filed Feb. 16, 2005; Japanese Patent Application No. 2005-038964, fi...

AI Technical Summary

Benefits of technology

[0120] As explained above, according to the present invention, by forming a magnetic layer, the antenna coil can be made to generate sufficient induced electromotive force to operate the IC chip even in the case of being placed on a metal article. Moreover, since the magnetic layer can be formed thinly, compared with a conventional non-contact IC label, a non-contact IC label with a thin thickness can be provided.

[0121] Since the method of manufacturing the non-contact IC label according to the present invention involves continuously supplying a subst

Problems solved by technology

Because of this, the problem arises of the flux that crosses the antenna coil of the IC label decreasing, causing the induced electromotive force to drop below the actuation electromotive force of the IC chip, so that the IC chip does not operate (for example, refer to nonpatent document 1).

However, in the method disclosed in patent document 1, enlarging the diameter of the antenna coil 152 in order to increase the flux that passes the antenna coil 152 in order to increase the induced electromotive force gives rise to the problem of increasing the thickness of the IC label.

On the other hand, in the method disclosed in patent document 2, the problem arises of increased thickness of the IC label due to providing a magnetic core member and a conductive member on one surface of the substrate.

However, in protecting the IC chip by supplying resin onto a semiconductor substrate on whose base substrate the IC chip is mounted and sealing the semiconductor substrate with the resin as described above, at the juncture when resin is supplied on the semiconductor substrate, the IC chip may be damaged and the connections between the wiring formed on the base substrate and the IC chip may break from the pressure and heat of the resin supply.

In addition, in a semiconductor device whose semiconductor substrate, on whose base substrate an IC chip is mounted, is sealed with resin, the IC chip may be damaged and the connections between the wiring formed on the base substrate and the IC chip may break from pressure being applied to the IC chip due to expansion of the resin from changes in the surrounding environment after manufacture, particularly a rise in the ambient temperature.

However, since the magnetic moment of the ferromagnetic material having spontaneous magnetization characteristics is strong, there is strong magnetic isotropy in this ferromagnetic material.

Accordingly, in the IC label in which a magnetic layer consisting of a ferromagnetic material is provided so as to be in contact with the antenna, when picking up flux emitted from the information writing reading device, variations arise in the degree of flux capture, giving rise to the problem of a d

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